Home / 20,820,363,755.12-28,732,101,982.07-11,909,692,508.12

Finding the Fourth Proportional to 20,820,363,755.12, 28,732,101,982.07 and 11,909,692,508.12

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Solution

The fourth proportional to 20,820,363,755.12, 28,732,101,982.07 and 11,909,692,508.12 is: 16,435,375,661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820,363,755.12 : 28,732,101,982.07 = 11,909,692,508.12 : x
  2. Step 2: Convert to fraction form
    20,820,363,755.12/28,732,101,982.07 = 11,909,692,508.12/x
  3. Step 3: Cross multiply
    20,820,363,755.12x = 28,732,101,982.07 × 11,909,692,508.12
  4. Step 4: Simplify right side
    20,820,363,755.12x = 342,190,499,718,398,869,504
  5. Step 5: Solve for x
    x = 342,190,499,718,398,869,504/20,820,363,755.12
  6. Step 6: Final answer
    x = 16,435,375,661.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.